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Finding the Fourth Proportional to 147,399.45, 203,410.01 and 82,868.97

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Solution

The fourth proportional to 147,399.45, 203,410.01 and 82,868.97 is: 114,358.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,399.45 : 203,410.01 = 82,868.97 : x
  2. Step 2: Convert to fraction form
    147,399.45/203,410.01 = 82,868.97/x
  3. Step 3: Cross multiply
    147,399.45x = 203,410.01 × 82,868.97
  4. Step 4: Simplify right side
    147,399.45x = 16,856,378,016.39
  5. Step 5: Solve for x
    x = 16,856,378,016.39/147,399.45
  6. Step 6: Final answer
    x = 114,358.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.